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TELEPHONE SWITCH.

Patented May, 29,-

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g, forming springs.

T0 all whom t'tmcy concern UNITED STATES PATENT OFFICE.

HENRY BRECKENRIDGE, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TOLJOSEPHA.MILLER, TRUSTEE, OF SAME PLACE.

TELEPHONE-SWITCH.

W SPECIFICATION formingpartof Letters Patent No. 278,494, dated May 29,1883.

I Application filed April24,1882. (No model.)

Be it known thatl, HENRY W. BRECKEN- RIDGE, of the city and county ofProvidence, and State of Rhode Island, have invented a new and usefulImprovement in Telephone- Switches 5 andI hereby declare that thefollowing is a'full, clear,'and exact description of the same, referencebeing bad to the accompanyingdrawings, forming part of this specifica:tion.

i This invention has reference toan improvement in pegs forconnectingtheline-wires with the bars of a telephone switch-board; andit consists in the peculiar construction of the peg by which metalliccontact is secured first with the wire and then with both sides of thebar, so that acontinuous circuit is formed, as will be more fully setforth hereinafter.

Figure 1 is a View of a portion of atelephone central office switchboard. Fig. 2 is a sectional view, shown full size, showing the pegconnecting the wire with the bar on the switch board; Fig. 3 isatransverse sectional view.

In the drawings, a a a are line-wires. b b b are the bars of theswitch-board. c is the iinproved peg, provided at its upperend with theflattened sides 07, the lower tapering end being split, so as to formthe bifurcated endsf and The slit ismade a little less in width than thethickness of the wire, so that when pushed over the wire the endsfand gwill spread apart, and, on entering the hole in the'bars b, will. beforced in contact with the sides of the holes, thus insuring absolute metallic contact first with the wire and then with the two sides of thehole in the barb. By this arrangement not only is the wire brought inmetallic. connection with the bar, but two separate connections are madeby the two legsf circuit than when only one connection is made. The endsof the legsf and g are rounded, so as to enlarge the opening ofthe slitand guide;

' and g, thus making a more complete electric 40 the peg automaticallyover the wire, thereby facilitating the insertion of the peg. .Inplacing thepeg over the wire connection is first made with the wire, andin pushing the same into any one of the holes the metallic connectionwith the bars is made gradual. The whole construction is simpleand'cheap, the metallic coi1tactperfect,andthe connectioncanbeqniclc 1ymade.

Having thus described m yinvention, I claim as new and desire to secureby Letters Patent- 1. The combination, in a telephone centralofficeswitch board, of the bars 1), arranged parallel with each other andprovided with perforations, the parallel wires (1, supported oppositethe perforations of bars I) anda little distance from said bars, and thesolid peg slitted at its tapering end toform spring-legsf v by a-lon'itudinal slit to form ta )erin s rin Z: h in legs of equal length,substantially as glescribed.

HENRY W,

\Vitnesses:

M. E. EMERSON, WM. L. 0001?.

BRECKENRIDGE.

